Check out this fantastic picture of Comet PANSTARRS (C/2011 L4) taken by Damian Peach of Selsey, England, on the morning of July 10, 2013. Although the comet is now receding from us and from the Sun, it still retains a nice tail in this shot. Damian used a 17-inch CDK scope at f/4.5, a FLI-PL6303E CCD camera, and composite stacked exposures.
When this photo was taken, PANSTARRS glowed at about magnitude 11.3 and was some 2.4 astronomical units (223.1 million miles [359.0 million kilometers]) from both the Sun and Earth.